Nonskid device



l. BLOOM ET AL NONSKID DEVICE Feb. 10, 1931.

Filed May (51, 1929 2 Sheets-Sheet l baacfilaom 0m INVENTORS BLOOM ET AL NONSKID DEVICE Feb. 10, 1931.

Filed May 51, 1929 2. Sheets-Sheet 2 ArrzoZdJfBZaam, XNVENTORS ATTORNEY 'TATES PATEN r OFFICE;

I ISAAC BLOOM AND'ARNOLD J. BLOOM, or' noonnsrnn, YORK NONSKID DEVICE Application filed ma .31, 1929. serial No. 367,468.

This invention relates to attachments for vehicle wheels and has for its object the provision of a novel device adapted to be'clamped the employment of any securing means other than that embodied in the device itself. "15 Another object is to provide anon-skid device of this character which may be applied to a wheel and its tire without necessitating jacking up the wheel or other troublesome and annoying operations such as is required in 20 connection with some types of non-skid devices,

Another object of the invention is to provide a device of thischaracter which is of such'construction thatit cannot cause any injury to the tire upon which it is used.

' Amore specific object is to provide a device of this character constructed itself in the nature of a spring clamp and adapted to engage against the edges and inner-periphery of the wheel rim so that it cannot becomedisplaced accidently, the provision of this particular means obviating any necessity for the employment of auxiliarysecuring means.

An additional object is to'provide a'device of this character which will be simple and inexpensive to manufacture, easy 'to apply 7 or remove, positive in action, efiicient "and durable in service, and a general improvement intheart. 7 f

With the above and other objects and advantages in view, the invention preferably consists in the details of construction and the arrangement and combination of parts to be hereinafter more fully describedand claimed, and illustrated in the accompanying drawings; in which Figure l is across sectional view through a tire and rim showing the device applied thereto, the device itself being alsoin section.

0 Figure 2 is a fragmentary side elevation of i such as are. provided a rim andtire showing a pairof the devices applied thereto, one of the devices being in side elevation and the other in section.

Figure 3 is a detail cross sectionalview through the hinged connection of the two members. r p

Figure l is aplan view at the hinge. 1 Referring more particularly to the drawings, we have illustrated a portionof a vehicle wheel including the usual fell y A to" which are secured the outer ends of the spokes B and which carries atire rim C on which is a pneumatic tire D having an inner tube E understood that the'non-skid device forming the subject matter of our invention is not limited to useon pneumatic tires as it isquite obvious that itcould be employed to equal therein. Howeveryit shouldbe distinctly advantage upon solid tires or cushion tires on trucks and other similar vehicles. I

In carrying out our invention we provide l a pair of rather similar metal plateslO. which 7 are arcuate in shape and which are preferably strengthened or'reinforced'at their edges by metal strips 11 though itis conceivable that this same'result might be accomplished 7 by simplybending or. folding back the material of the plates. In the present instance, however; the reinforcing strips are shown and are represented I as held in place by rivets 12. 7 I For connecting the" plate member's 1Q. we

provide a spring hinge structure comprising japair of-leaves 13 and litriveted at 15 on the plates and formed-with interfitting knuckles 16-and 17 respectively and having terminal ears 18 and 19 through which passes a pintle or pivot pin 20 which'has its end preferably I upset as indicated at.2l to'prevent accidental removal. or withdrawal. Surroundingthis pintle and enclosed within-the hinge structure is a coilspringl22 which hasone end se- .curedto one ear '18 and which has its other" endpassing freely through an opening 23 in the other ear '18 andconnected'with the other 7 ear 19. The opening :23' maybe .arcuate or simply of suflicient size to permit movement ofthe' hingesecftions. This isreally a conventional spring hinge and might not need to be described in such minute detail but the descriptionand illustration are given for the sake of clearness. The point is that the spring 2:2 operates to urge the free ends of the plates 10 towardeach other. The free ends of the plates 10 are angularly arranged or curved, as clearly indicated in Figure 1 so as'to' engage against thei'nner periphery of thewheel rim C and against the outer edges of the telly A. I i a I In order to provide a rougiii suefiaee which will prevent skidding or spinning of the tire, the metal plates 10 are formed throughout a considerable portion of their area with a plurality of l p 'ongsor' t'ines" 2 which may bevery easily formedby punching the plates 10 outwardly from the inside. In actual practice each of the prongs may be defined simply by cutting the metal of the plate's'lO along two intersecting lines, the material defined between these lines being .then ressedout b 1 an suitable machiner or mechanism to obtain the desired effect.

It is of course desirable to protect the tire from injury by metal plates, and in fact some sort of pad means isnecessary on account of the fact that the spring hinge structure en- .tendsinwardly, and. for this reason we have .shown a yiel'dable pad 25 which maybe of leather but which is preferably of substantially the same detailed construction as the tire itself. One of these pads isattachcd to theinner side of the plates 10' and these members are so disposed as to provide a space 26 between them for the accommodation ofthe spring hinge structure as-clearlyillustrated in- Figure 1. Clearly, these pads are inter- :posed between the inetalplatesand the surfaceof the tire and Willpositively prevent any injury to'tiie tire even though the prongs mightbe forced: inwardly, as for example by contact with a stoneor the hire. a

In'the use of theudevice,it is of conrse to understood that under ordinary circum stances, that is to say when it is not in use the spring hingejstructure will urge the free ends of the plates toward each other so that they will as a matter of factoverlap. :However, this isfa very minor detail: The point is that when it is desired to apply one of the devices, it is simply necessary to grasp the opposite plate members 10" and. pillllthem apart in opposition'toi the spring 22, whereupon the device maybe'easily engaged :upon the tire by moving it towa'rd the center of the wheel. lVhen the platemembers are subsequently released it .is apparent that the spring hinge will force the freegends of the plates'toward each other'so that, these curved or an ular" ends will en a e a ainst theinner periphery of'the riniand against the outer side of the folly serve the purpose of hookswhich will positively'prevent the device from. becoming acoidently detached or 7 displaced.v I actual practice itfis probable shaped to con 7 e i and: adapted to'be disposed transversely therethat several of the devices would be used upon each of the rear wheels of the vehicleand it simple matterto remove it by simply grasping the plates lO and pulling them apart so that the device maybe slipped oil of the tire by moving it outwardly with respect to the center of the wheel. i i

From the foregoing description and a study of the drawing. it will be apparent that we have thus provided a very simply constructed ommend itself. Commercially, the device would necessarily have to be made up in different sizes to fit different sizes and styles of tires but this is naturally not a feature-ofcOnsequence from a viewpoint ofinvention as we r'eservethe right to make all such changes in size, shape, and material, as well as in the arrangement and combination of parts and details of construction as will not depart from the spirit of the invention or the scope of the subjoined claim. c

Having thus described the invention we claim 1- A non-skid attachment for avehicle tire comprlsmg apair of curved plate members orm substantially to'the tire on, each of said plate membershaving one edge '1 1n angular form adaptedto engage against the inner periphery of the Wheel rim,

and a; hingedevice connecting, the adjacent edges of. said plate members, said hinge device comprising a'pair ofeleaves one formed with lugs at its "edgesand the other being formedw-ith lugs at its edges located inwardly of the first named lugs, a rpintle passing through all o'fsaid lugs, and a coil spring surrounding. said pmtle and having, one end ja'ndeasily attached device which will very g secured to one of: the second named lugs and its other endpas'sing' freely through the other of the second named lugs andsecured to the adi acent one of the first named lugs.

In testimony tures.

. ISAAC BLOOM. ARNOLD; J.- BLOOM..

whereof We afli-X our signa- 

